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Gregory Lawrence
Gregory Lawrence

Contact Information

Gregory Lawrence
U.S. Geological Survey
425 Jordan Road
Troy, N.Y. 12180
ph: 518-285-5664
fax: 518-285-5601
email: glawrenc@usgs.gov

Current Position: Research Scientist, Water Resources Division., U.S.Geological Survey, GS-15
Education: Ph.D., Syracuse University, 12/87
Major: Civil Engineering
Area of Study: Aquatic Chemistry, Watershed Biogeochemistry

M.S., S.U.N.Y. College of Environmental Science and Forestry, 5/82
Major: Environmental and Forest Biology
Area of Study: Sediment Chemistry, Limnology

B.A., University of Vermont, 5/79
Major: Zoology
Area of Study: Aquatic Ecology

Society Memberships: American Geophysical Union
Soil Science Society of America
Ecological Society of America
Current Projects: 1. Assessment of soil and water acidification in the Adirondack region.
2. Changes in the chemistry of soils in western Russia over the past century.
3. Effects of experimental manipulation of calcium, magnesium and nitrogen availability on Catskill Forests.
Selected Publications:(96 biblios)
  1. Baldigo, B.P., Lawrence, G.B., Bode, R.W., Simonin, H.A., Roy, K.M., and Smith, A.J., 2009, Impacts of acidification on macroinvertebrate communities in streams of the western Adirondack Mountains, New York, USA:, Ecological Indicators, v. 9, p. 226-239 Details
  2. Lawrence, G.B., Roy, K.M., Baldigo, B.P., Simonin, H.A., Passy, S.I., Bode, R.W., and Capone, S.B., 2009, Acid rain effects on Adirondack streams--results from the 2003-05 Western Adirondack Stream Survey (the WASS Project):, U.S. Geological Survey Fact Sheet 2009-3075, 6 p. Details
  3. Lawrence, G.B., Baldigo, B.P., Roy, K.M., Simonin, H.A., Bode, R.W., Passy,S.I., and Capone, S.B., 2008, Results from the 2003-2005 Western Adirondack stream survey:, New York State Energy Research and Development Authority (NYSERDA) Final Report 08-22.141 p. Details
  4. Lawrence, G.B., Roy, K.M., Baldigo, B.P., Simonin, H.A., Capone, S.B., Sutherland, J.W., Nierzwicki-Bauer, S.A. and Boylen, C.W., 2008, Chronic and episodic acidification of Adirondack streams from acid rain in 2003-2005:, Journal of Environmental Quality, v. 37, p. 2264-2274, doi:10.2134/jeq2008.0061 Details
  5. Lawrence, G.B., Sutherland, J.W., Boylen, C.W., Nierzwicki-Bauer, S.W., Mome, B., Baldigo, B.P., and Simonin, H.A., 2007, Acid rain effects on aluminum mobilization clarified by inclusion of strong organic acids:, Environmental Science & Technology, v. 41, no. 1, p. 93-98, DOI: 10.1021/es061437v. Details
  6. Baldigo, B.P., Lawrence, G.B. and Simonin, H.A., 2007, Persistent mortality of brook trout in episodically acidified streams of the southwestern Adirondack Mountains, New York:, Transactions of the American Fisheries Society, v. 136, p. 121-134, doi:10.1577/T06-043.1 Details
  7. McHale, M.R., Burns, D.A., Lawrence, G.B. and Murdoch, P.S., 2007, Factors controlling soil water and stream water aluminum concentrations after a clearcut in a forested watershed with calcium-poor soils:, Biogeochemistry, v. 84, no. 3, p. 311-331. Details
  8. Lapenis, A.G., Lawrence, G.B., Baily, S., Aparin, B., Shiklomanov, A., Speranskaya, N., Torn, M., and Calef, M., 2007, Climatically driven loss of calcium in steppe soil [abs.]:, EOS Transactions, American Geophysical Union, v. 88, no. 52, Suppl, v. 1-2, Dec. 25, 2007. Details
  9. Lincoln, T.A., Horan-Ross, D.A., McHale, M.R., and Lawrence, G.B., 2006, Quality-assurance data for routine water analyses by the U.S. Geological Survey laboratory in Troy, New York--July 1999 through June 2001:, U.S. Geological Survey Open-File Report 2006-1246, 27 p., online only. Details
  10. Lincoln, T.A., Horan-Ross, D.A., McHale, M.R., and Lawrence, G.B., 2006, Quality-assurance data for routine water analyses by the U.S. Geological Survey laboratory in Troy, New York--July 1997 through June 1999:, U.S. Geological Survey Open-File Report 2006-1245, 25 p., online only. Details
  11. Lawrence, G.B., 2005, The critical load--a useful concept that needs a simplified application:, National Atmospheric Deposition Program (NADP) 2005, Sept. 27-30, 2005, Jackson, Wyoming, p. 53. Details
  12. Lawrence, G.B., Lapenis, A.G., Dan Berggren, Aparin, B.F., Smith, K.T., Shortle, W.C., Bailey, S.W., Varlyguin, D.L., and Boris Babikov, 2005, Climate dependency of tree growth suppressed by acidic deposition effects on soils in northwest Russia:, Environmental Science & Technology, v. 39, no. 7, p. 2004-2010, DOI: 10.1021/es048759o Details
  13. Lincoln, T.A., Horan-Ross, D.A., McHale, M.R., and Lawrence, G.B., 2005, Quality-assurance data for routine water analyses by the U.S. Geological Survey laboratory in Troy, New York; July 1995 through June 1997:, U.S. Geological Survey Open-File Report 2004-1327, 23 p., online only. Details
  14. Lawrence, G.B., Ross, D.S., Sutherland, J.W., Nierzwicki-Bauer, S. and Boylen, C., 2004, A new twist on the seasonality of nitrate retention and release in Adirondack watersheds:, EOS, Transactions, American Geophysical Union, 85(47), Fall Meet. Suppl., Abstract H41E-0339 Details
  15. Lapenis, A.G., Lawrence, G.B., Andreev, A.A., Bobrov, A.A., Torn, M.S., and Harden, J.W., 2004, Acidification of forest soil in Russia: From 1893 to present:, Global Biogeochemical Cycles, v. 18, GB1037, doi:10.1029/2003GB002107 (13 p.) Details
  16. Ross, D.S., Lawrence, G.B., and Fredriksen, Guinevere, 2004, Mineralization and nitrification patterns at eight northeastern USA forested research sites:, Forest Ecology and Management, v. 188, Issues 1-3, 5 February 2004, p. 317-335, doi:10.1016/j.foreco.2003.08.004 Details
  17. Lawrence, G.B., Momen, Bahram, Roy, K.M., 2004, Use of stream chemistry for monitoring acidic deposition effects in the Adirondack Region of New York:, Journal of Environmental Quality, v. 33, no. 3, p. 1002-1009 Details
  18. McHale, M.R., Murdoch, P.S., Burns, D.A., and Lawrence, G.B., 2004, Controls on inorganic monomeric aluminum release from soils after a clearcut in southeastern New York State, USA:, EOS, Transactions, American Geophysical Union, 85(47), Fall Meet. Suppl., Abstract H41E-0340 Details
  19. Lawrence, G.B., Bailey, S.W., Shortle, W.C., Smith, K.T., Ross, D.S., Burns, D.A., Murdoch, P.S., 2004, Nutrient imbalances in Catskill forest soils [abs.]:, Compendium of Abstracts, 2d Annual New York City Watershed Science and Technical Conference, Sept. 21-22, 2004, Fishkill, New York, p.21 Details
  20. Murdoch, P.S., McHale, M.R., Lawrence, G.B., and Burns, D.A., 2004, Multi-scale evaluation of the effects of soil calcium depletion on forest health and stream water quality in the northern Delaware River Basin of southeastern New York [abs.], Compendium of Abstracts, 2d Annual New York City Watershed Science and Technical Conference, Sept. 21-22, 2004, Fishkill, New York, p. 26 Details
  21. Driscoll, C.T., Whitall, D., Aber, J., Boyer, E., Castro, M., Cronan, C., Goodale, C., Groffman, P., Hopkinson, C., Lambert, K., Lawrence, G.B. and Ollinger, S., 2003, Nitrogen pollution: sources and consequences in the U.S. northeast:, Environment, v. 45, no. 7, p. 8-22 Details
  22. Driscoll, C.T., Whitall, D., Aber, J., Boyer, E., Castro, M., Cronan, C., Goodale, C.L., Groffman, P., Hopkinson, C., Lambert, K., Lawrence, G.B., and Ollinger, S., 2003, Nitrogen Pollution in the Northeastern United States: Sources, Effects, and Management Options:, BioScience, v. 53, no. 4, p. 357-374 Details
  23. Lawrence, G.B., Lapenis, Andrei, Berggren, Dan, and Aparin, B.F., 2003, Changes in the calcaerous soil of a spruce forest near St. Petersburg, Russia, from 1934-2001:, 4th North American Forest Ecology Workshop: Ecosystems in Transition, June 16-20, 2003, Corvallis, Oregon Details
  24. Driscoll, C.T., Whitall, D., Aber, J., Boyer, E., Castro, M., Cronan, C., Goodale, C.L., Groffman, P., Hopkinson, C., Lambert, K., Lawrence, G.B., and Ollinger, S., 2003, Nitrogen pollution: from the sources to the sea::, Hubbard Brook Research Foundation, Science Links Publication, v. 1, no. 2, 24 p. Details
  25. Lawrence, G.B., Roy, K.M., and Passy, S.I., 2003, Assessment of chemistry and benthic communities in streams of the Oswegatchie-Black River basins of the Adirondack region:, in Environmental Monitoring, Evaluation, and Protection in New York: Linking Science and Policy: Conference Proceedings, Albany, NY, October 7-8, 2003, poster presentation Details
  26. Vitvar, Tomas, Burns, D.A., Lawrence, G.B., McDonnell, J.J., and Wolock, D.M., 2002, Estimation of baseflow residence times in watersheds from the runoff hydrograph recession; method and application in the Neversink watershed, Catskill Mountains, New York, Hydrological Processes, 16 (9), p. 1871-1877 Details
  27. Baldigo, B.P., Lester, T.T., Schuler, G.E., Riva-Murray, Karen, Murdoch, P.S., and Lawrence, G.B., 2002, Effects of acidification and a reservoir on macroinvertebrate communites of the Neversink River, New York:, North American Benthological Society, 2002 annual meeting, abstracts Details
  28. Lawrence, G.B., 2002, Persistent episodic acidification of streams linked to acid rain effects on soil:, Atmospheric Environment, v. 36, Issue 10, April 2002, p. 1589-1598, DOI: 10.1016/S1352-2310(02)00081-X, PII: S1352-2310(02)00081-X, Elsevier Science Ltd. Details
  29. Lawrence, G.B., 2002, Acidification status of streams in the western Adirondack region:, Northeast Natural History Conference VII, April 24-27, 2002, New York State Museum Circular 64, p. 60. Details
  30. Lincoln, T.A., Horan-Ross, D.A., McHale, M.R., and Lawrence, G.B., 2001, Quality-assurance data for routine water quality analyses by the U.S. Geological Survey laboratory in Troy, New York; July 1993 through June 1995:, U.S. Geological Survey Open-File Report 01-071, 25 p., online only. Details
  31. Driscoll, C.T., Lawrence, G.B., Bulger, A.J., Butler, T.J., Cronan, C.S., Eager, Christopher, Lambert, K.F., Likens, G.E., Stoddard, J.L., Weathers, K.C., 2001, Acidic deposition in the Northeastern United States: Sources and inputs, ecosystem effects and management strategies:, BioScience, v. 51, no. 3, p. 180-198 Details
  32. Lawrence, G.B., Burns, D.A., Baldigo, B.P., Murdoch, P.S., and Lovett, G.M., 2001, Controls of stream chemistry and fish populations in the Neversink watershed, Catskill Mountains, New York:, U.S. Geological Survey Water-Resources Investigations Report 00-4040, 16 p. Details
  33. Driscoll, C.T., Lawrence, G.B., Bulger, A.J., Butler, T.J., Cronan, C.S., Eager, Christopher, Fallon-Lambert, Kathleen, Likens, G.E., Stoddard, J.L., and Weathers, K.C., 2001, Acid Rain Revisted: advances in scientific understanding since the passage of the 1970 and 1990 Clean Air Act Amendments:, in Hubbard Brook Research Foundation. Science LinksTM Publication. v. 1, no 1, 23 p. Details
  34. Baldigo, B.P. and Lawrence, G.B., 2001, Effects of stream acidification and habitat on fish populations of a North American river:, Aquatic Sciences, v. 63, issue 2, p. 196-222. Details
  35. Johnson, C.E., Ruiz-Mendez, J.J., and Lawrence, G.B., 2000, Forest soil chemistry and terrain attributes in a Catskill mountain watershed:, Soil Science Society of America Journal, v. 64, no. 5, p. 1804-1814 Details
  36. Baldigo, B.P. and Lawrence, G.B., 2000, Composition of fish communities in relation to stream acidification and habitat in the Neversink River, New York:, American Fisheries Society, Transactions, v. 129, p. 60-76 Details
  37. Lawrence, G.B. and David, M.B., 2000, Persistence of episodic stream acidification in the Northeastern United States [abs.]:, in Douglas, K. E., and Bedient, P. S., 2000, NADP 2000--Ten years after the Clean Air Act Amendments--Adirondacks in the Balance: National Atmospheric Deposition Program, Proceedings 2000-01, Sarataoga Springs, NY, October 17-20, 2000, p. 27. Details
  38. Burns, D.A., Murdoch, P.S., Lawrence, G.B., and Baldigo, B.P., 2000, The Neversink River Basin: A laboratory for studying the interrelationship of acid deposition, biogeochemistry, forest health, and stream biota:, EOS, Transactions, American Geophysical Union, v. 81, no. 48, Fall Meeting. Supplement, Abstract H51B-12, 2000 Details
  39. Lawrence, G.B., Lovett, G.M., and Baevsky, Y.H., 2000, Atmospheric deposition and watershed nitrogen export along an elevational gradient in the Catskill Mountains, New York:, Biogeochemistry, v. 50, no. 1, p. 21-43 Details
  40. Lawrence, G.B., Vogt, Kristina, Vogt, D.J., Tilley, Joel, and Wargo, P.M., 2000, Atmospheric deposition effects on surface waters, soils and forest productivity:, in Mickler, R. A., Birdsey, R. A. and Hom, J., eds., Responses of Northern U.S. Forests to Environmental Change. Ecological Studies 139, Springer- Verlag, p. 275-330 Details
  41. Bullen, T.D., Huntington, T.G., Lawrence, G.B., and Fitzpatrick, J., 2000, An integrated approach to determining watershed calcium status at several eastern U.S. Hydrologic Benchmark Network sites:, EOS, Transactions, American Geophysical Union, v. 81, no. 48, Fall Meet. Suppl., Abstract H51B-11, 2000 Details
  42. Burns, D.A., Murdoch, P.S., and Lawrence, G.B., 2000, Clean air act and acid precipitation receiving increased attention:, EOS, Transactions, American Geophysical Union, v. 81, no. 13, March 28, 2000, p. 134. Details
  43. Lawrence, G.B., Goolsby, D.A., Battaglin, W.A., and Stensland, G.J., 2000, Atmospheric nitrogen in the Mississippi River Basin -- Emissions, Deposition and Export:, The Science of the Total Environment, v. 248, Issues 2-3, April 2000, p. 87-100, DOI: 10.1016/S0048-9697(99)00533-1, PII: S0048-9697(99)00533-1, Elsevier Science B.V. Details
  44. Burns, D.A., Lawrence, G.B., and Murdoch, P.S., 2000, Effects of acid deposition in North America -- Current status:, Bulletin of Ecological Society of America, v. 81, p. 145-146 Details
  45. Burns, D.A., Lawrence, G.B., and Murdoch, P.S., 2000, Clean Air Act and acid precipitation receiving increased attention [abs.]:, EOS, Transactions, American Geophysical Union, v. 81, p. 134. Details
  46. Lawrence, G.B. and David, M.B., 2000, Episodic stream acidification: A symptom of soil base depletion by acidic deposition:, in 2000 Agronomy Abstracts, American Society of Agronomy, Madison, WI, p. 337. Details
  47. Lawrence, G.B., David, M.B., Lovett, G.M., Murdoch, P.S., Burns, D.A., Stoddard, J.L., Baldigo, B.P., Porter, J.H., and Thompson, A.W., 1999, Soil calcium status and the response of stream chemistry to changing acidic deposition rates:, Ecological Applications, v. 9, issue 3, p. 1059-1072. Details
  48. Lawrence, G.B., David, M.B., Shortle, W.C., Bailey, S.W., and Lovett, G.M., 1999, Mechanisms of base-cation depletion by acid deposition in forest soils of the Northeastern U.S.:, in U.S. Department of Agriculture, Forest Service, Sugar Maple Ecology and Health: Proceedings of an International Symposium, June 2-4, 1998, Warren, Pennsylvania, General Technical Report NE-261, p. 75-87 Details
  49. Lawrence, G.B., Goolsby, D.A., and Battaglin, W.A., 1999, Atmospheric deposition of nitrogen in the Mississippi River basin:, in Morganwalp, D.W., and Buxton, H.T., eds., USGS Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999, USGS Water-Resources Investigations Report 99-4018B, p. 331-337. Details
  50. Lawrence, G.B. and Huntington, T.G., 1999, Soil-calcium depletion linked to acid rain and forest growth in the eastern United States:, U.S. Geological Survey Water-Resources Investigations Report 98-4267, 12 p. Details
  51. Momen, Bahram, Lawrence, G.B., and Zehr, Jon, 1999, Sub-soil depletion of calcium in watersheds of western Adirondack Lakes in New York:, EOS, Transactions, American Geophysical Union, 1999 Spring Meeting, number H52C-03. Details
  52. Lawrence, G.B., Murdoch, P.S., and Burns, D.A., 1999, Role of soil-base depletion in episodic acidification of Catskill Mountain streams of southeastern New York:, EOS, Transactions, American Geophysical Union, Spring Meeting, 1999, number H52C-04. Details
  53. Burns, D.A., Lawrence, G.B., and Murdoch, P.S., 1998, Streams in Catskill Mountains still susceptible to acid rain:, EOS, Transactions, American Geophysical Union, v. 79, no. 16, p. 197, 200-201. Details
  54. Burns, D.A., Lawrence, G.B., Wolock, D.M., McDonnell, J.J., and Michel, R.L., 1998, Estimating subsurface residence time of young water in upland catchments of the Adirondack and Catskill Mountains of New York:, American Geophysical Union, 1998 Spring Meeting, May 26-29, Boston, Mass., number H41G-06 Details
  55. Burns, D.A., Lawrence, G.B., and Murdoch, P.S., 1998, Streams in Catskill Mountains still susceptible to acid rain:, Northeastern Geology and Environmental Sciences, v. 20, no. 4, p. 294-298. Details
  56. Murdoch, P.S., Burns, D.A., and Lawrence, G.B., 1998, Relation of climate change to the acidification of surface waters by nitrogen deposition:, Environmental Science & Technology, v. 32, no. 11, p. 1642-1647 Details
  57. Murdoch, P.S., Burns, D.A., and Lawrence, G.B., 1998, Factors that inhibit recovery of acid neutralizing capacity (ANC) in Catskill Mountain streams, New York:, American Geophysical Union, 1998 Spring Meeting, April 28, 1998, p. S89. Details
  58. David, M.B., Cupples, A.M., Lawrence, G.B., Shi, G., Vogt, K., and Wargo, P.M., 1998, Effect of chronic nitrogen additions on soil nitrogen fractions in red spruce standsV, Water, Air, and Soil Pollution, v. 105, p. 183-192. Details
  59. Burns, D.A., Murdoch, P.S., Lawrence, G.B., and Michel, R.L., 1998, Effect of groundwater springs on NO3 concentrations during summer in Catskill Mountains streams:, Water Resources Research, v. 34, no. 8, p. 1987-1996. Details
  60. Lawrence, G.B., David, M.B., Bailey, S.W., and Shortle, W.C., 1997, Assessment of calcium status in soils of red spruce forests in the northeastern United States:, Biogeochemistry, v. 38, no. 1, p. 19-39 Details
  61. Lawrence, G.B. and David, M.B., 1997, Response of aluminum solubility to elevated nitrification in soil of a red spruce stand in eastern Maine:, Environmental Science & Technology, v. 31, no. 3, p. 825-830 Details
  62. Wolock, D.M., Fan, J., and Lawrence, G.B., 1997, Effects of subbasin size on low flow stream chemistry and subsurface contact time in the Neversink River watershed, New York, Hydrological Processes, v. 11, p. 1273-1286 Details
  63. Minocha, Rakesh, Shortle, W.C., Lawrence, G.B., David, M.B., and Minocha, S.C., 1997, Relationship among foliar chemistry, foliar polyamines, and soil chemistry in red spruce trees growing across the northeastern United States:, Plant and Soil, v. 191, p. 109-122. Details
  64. Shortle, W.C., Smith, K.T., Minocha, Rakesh, Lawrence, G.B., and David, M.B., 1997, Acidic deposition, cation mobilization, and biochemical indicators of stress in healthy red spruce trees:, Journal of Environmental Quality, v. 26, p. 871-876 Details
  65. Murdoch, P.S., Wall, G.R., Phillips, P.J., Lawrence, G.B., Stoddard, J.L., Wolock, D.M., and Hornbeck, J.W., 1997, Integrating small watershed and regional-scale data to interpret regional environmental trends:, Journal of Conference, Abstracts, Biogeomon, 3d International Symposium on Ecosystem Behaviour, v. 2, no. 2, June 21-25, 1997, Villanova, USA: Cambridge Publications Details
  66. Baevsky, Y.H., Lawrence, G.B., Wolock, D.M., Burns, D.A., and Murdoch, P.S., 1997, Combining Digital Spatial Data with Hydrologic Measurements to Interpret Controls of Stream Chemistry in Large Watersheds:, in BIOGEOMON '97, Journal of Conference Abstracts, vol. 2 no. 2, poster session 2, Cambridge Publications; Meeting: BIOGEOMON '97, June 21-25, 1997, Villanova University, Penn. SESSION II - Interfacing Biogeochemistry with GIS Details
  67. David, M.B., Cupples, A.M., Lawrence, G.B., Vogt, K., Wargo, P.M., and Shortle, W.C., 1997, Forest floor nitrogen pools in red spruce stands: response to chronic nitrogen additions:, Biogeomon '97, v. 2, no. 2. Details
  68. Lawrence, G.B., David, M.B., Lovett, G.M., Murdoch, P.S., Burns, D.A., Baldigo, B.P., Thompson, A.W., Porter, J.H., and Stoddard, J.L., 1997, Soil calcium status and the response of stream chemistry to decling acid rain:, Biogeomon '97, Journal of Conference Abstracts, v. 2, no. 2 Details
  69. Burns, D.A., Murdoch, P.S., Lawrence, G.B., Kendall, Carol and Lovett, G.M., 1996, Processes that affect the transformation of atmospherically deposited nitrogen in Catskill Mountain (New York) watersheds:, in Puckett, L. J. and Triska, F. J., eds., 1996, U.S. Geological Survey Nitrogen-Cycling Workshop, Denver, Colorado, October 20-November 2, 1995: U.S. Geological Survey Open-File Report 96-477, p. 28 Details
  70. Lincoln, T.A., Horan-Ross, D.A., Olson, M.L., and Lawrence, G.B., 1996, Quality-assurance data for routine water analyses by the U.S. Geological Survey laboratory in Troy, New York; May 1991 through June 1993:, U.S. Geological Survey Open-File Report 96-167, 22 p. Details
  71. Burns, D.A., Lawrence, G.B., Wolock, D.M., Brown, V.A., and McDonnell, J.J., 1996, Relations of subsurface residence time to hydrology and stream chemistry during low- and high-flow conditions in the Neversink River of New York:, EOS, Transactions, American Geophysical Union, v. 77 (46, Suppl.), p. 230, American Geophysical Union 1996 fall meeting, San Francisco, CA, Dec. 15-19, 1996 Details
  72. Lawrence, G.B., David, M.B., and Shortle, W.C., 1996, Aluminum mobilization and calcium depletion in the forest floor of red spruce forests in the northeastern United States:, in Hom, John, Birdsey, Richard, and O'Brian, Kelly, eds., Proceedings 1995 meeting of the northern global change program, Pittsburgh, Pa., March 14-16, 1995: U.S. Forest Service General Technical Report NE-214, 1996, p. 112-117 Details
  73. Ross, D.A., David, M.B., Lawrence, G.B., and Bartlett, R.J., 1996, Exchangeable hydrogen explains the pH of spodosol Oa horizons:, Soil Science Society of America Journal, v. 60, p. 1926-1932 Details
  74. Minocha, Rakesh, Shortle, W.C., Lawrence, G.B., David, M.B. and Minocha, S.C., 1996, Putrescine -- A marker of stress in red spruce trees:, U.S. Forest Service General Technical Report NE-214, 1996, Hom, John, Birdsey, R., and O'Brian, K., eds., Proceedings of the 1995 meeting of the northern global change program, Pittsburgh, Pa., March 14-16, 1995, p. 119-130. Details
  75. Lawrence, G.B. and David, M.B., 1996, Effects of atmospheric nitrogen deposition on the availability of nitrogen, organic carbon, and calcium in forest soils of the Northeast:, in Puckett, L. J. and Triska, F. J., eds., 1996, U.S. Geological Survey Nitrogen-Cycling Workshop, Denver, Colorado, October 20-November 2, 1995: U.S. Geological Survey Open-File Report 96-477, p. 29 Details
  76. Lawrence, G.B. and David, M.B., 1996, Chemical evaluation of soil-solution in acid forest soils:, Soil Science, May 1996, v. 161, no. 5, p. 298-313. Details
  77. David, M.B. and Lawrence, G.B., 1996, Soil and soil solution chemistry under red spruce stands across the northeastern United States:, Soil Science, May 1996, v. 161, no. 5, p. 314-328. Details
  78. Lawrence, G.B., Wolock, D.M., Bailey, S.W., and Hornbeck, J.W., 1996, Variable-source areas as controls of flow-related changes in stream chemistry:, EOS, Transactions, American Geophysical Union, 1996 fall meeting, supplement to EOS, v. 77, no. 46, p. F226, November 12, 1996. Details
  79. David, M.B., Lawrence, G.B., Shortle, W.C., and Bailey, S.W., 1995, Calcium status of the forest floor in red spruce forests of the Northeastern U.S. -- Past, present, and future [abs.]:, Acid Reign '95, Proceedings of the 5th International Conference on Acidic Deposition, Goteborg, Sweden, 26-30 June 1995, Kluwer Academic Pub, Abstract Book, p. 134. Details
  80. Lawrence, G.B., Lincoln, T.A., Horan-Ross, D.A., Olson, M.L., and Waldron, L.A., 1995, Analytical methods of the U.S. Geological Survey's New York District water-analysis laboratory:, U.S. Geological Survey Open-File Report 95-416, 78 p. Details
  81. Lawrence, G.B., David, M.B., and Shortle, W.C., 1995, A new mechanism for calcium loss in the forest-floor soils:, Nature (London), v. 378, no. 6553, p. 162-165. Details
  82. Lawrence, G.B., David, M.B., and Shortle, W.C., 1995, Aluminum mobilization as mechanism for calcium depletion in the forest floor of red spruce forests in the Northeastern U.S. [abs.]:, Acid Reign '95, Proceedings of the 5th International Conference on Acidic Deposition, Goteborg, Sweden, 26-30 June 1995, Kluwer Academic Pub, Abstract Book, p. 126. Details
  83. Fernandez, I.J., Lawrence, G.B., and Son, Yowhan, 1995, Soil-solution chemistry in a low-elevation spruce-fir ecosystem, Howland, Maine:, Water, Air, and Soil Pollution, v. 84, p. 129-145. Details
  84. Lawrence, G.B., David, M.B., and Shortle, W.C., 1995, Effects of (NH4)2SO4 addition on aluminum and calcium chemistry in soils and soil solutions of red spruce stands in Bear Brook watersheds [abs.]:, Acid Reign '95, Proceedings of the 5th International Conference on Acidic Deposition, Goteborg, Sweden, 26-30 June 1995, Kluwer Academic Pub, Abstract Book, p. 252. Details
  85. Lawrence, G.B., Burns, D.A., Murdoch, P.S., Baldigo, B.P., and Baevsky, Y.H., 1994, Work plan of the Neversink Watershed Study in the Catskill Mountains of southeastern New York:, U.S. Geological Survey Open-File Report 94-368, 42 p. Details
  86. Fan, J., Wolock, D., and Lawrence, G.B., 1994, Using GIS to study the spatial relation between watershed topography and stream chemistry in the Neversink River basin, New York:, EOS, Transactions, American Geophysical Union, v. 75. no. 16, Suppl., p. 175 Details
  87. Lawrence, G.B. and Fernandez, I.J., 1993, A reassessment of areal variability of throughfall deposition:, Ecological Applications, Geological Society of America, v. 3, no, 3, p. 473-480 Details
  88. Lawrence, G.B. and David, M.B., 1993, Method for chemical evaluation of soils and soil-solution in northeastern red-spruce stands [abs.]:, Agronomy Abstracts, 1993 Annual Meeting, November 7-12, 1993, Cincinnati, OH, p. 337. Details
  89. Fernandez, I.J., Rustad, L.E., and Lawrence, G.B., 1993, Estimating total mass, nutrient content, and trace metals in soils under a low elevation spruce-fir forest:, Canadian Journal of Soil Science, v. 73, no. 8, p. 317-328 Details
  90. Burns, D.A., Murdoch, P.S., and Lawrence, G.B., 1993, Effects of ground water seeps in NO3- concentrations in stream water in the Catskill Mountains of New York:, EOS, Transactions, American Geophysical Union, v. 74, no. 43, supplement, p. 258, 1993 fall meeting, October 26, 1993 Details
  91. David, M.B., Lawrence, G.B., and Shortle, W.C., 1993, Ca and Al chemistry of soils and soil solution in northeastern red spruce stands [abs.]:, Agronomy Abstracts, 1993 Annual Meeting, November 7-12, 1993, Cincinnati, OH, p. 334. Details
  92. Lawrence, G.B., David, M.B. and Shortle, W.C., 1992, Speciation of soil and soil solution aluminum in red spruce stands receiving acidic deposition, (abst):, Agronomy Abstracts, 1992 Annual Meeting, November 1-6, 1992, Minneapolis, MN, p. 350-351. Details
  93. Burns, D.A., Murdoch, P.S., and Lawrence, G.B., 1991, Water-quality studies in the Catskill region of New York:, U.S. Geological Survey Open-File Report 92-30, 2 p. Details
  94. Lawrence, G.B., Driscoll, C.T., and Fuller, R.F., 1988, Hydrologic control of aluminum chemistry in an acidic headwater stream:, Water Resources Research, v. 24, no. 5, p. 659-669. Details
  95. Lawrence, G.B., Fuller, R.D., and Driscoll, C.T., 1987, Release of aluminum following whole-tree harvesting at Hubbard Brook Experimental Forest, New Hampshire:, Journal of Environmental Quality, v. 16, no. 4, p. 383-390 Details
  96. Lawrence, G.B., Fuller, R.F., and Driscoll, C.T., 1986, Spatial relationships of Al chemistry in streams of the Hubbard Brook Experimental Forest, New Hampshire:, Biogeochemistry, v. 2, no. 2, p. 115-135. Details
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